Power-drive for adding-machines.



J G. VINCENT; POWER DRIVE FOR ADDING MAOHiNES.

. APPLICATION FILED AUG.13,1906. 99Q 31 '7, Patented Apr. 25, 1911.

4. SHEETS-SHEET 1*.

J. G. VINCENT. POWER DRIVE FOR ADDING MACHINES.

APPLICATION FILED AUG.13,- 190G. Q9@,$1 R, Patented Apr. 25, 1911.

4 SHBETS*SHIEET z.

J. G. VINCENT.

POWER DRIVE FOR ADDING MACHINES.

APPLICATION FILED AUG. 13, 1906.

9Q,31'?,- Patented M1125, 1911.

J. G. VINCENT. POWER DRIVE FOR ADDING MACHINES.

APPLIGATION FILED AUG.13,1906. 990,31?s Patented Apr. 25, 1911.

SBEBTSSHEET 4.

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G. VIINENT, OF DETROIT. :MICHIGAN, ASSIGNOR TO :BURRQUGHS ADDING IVIA- I CHINE COMPANY, OF DETRQIT, 'MICEIGAN, A CORPORATION OF MICHIGAN.

acacia.

Specification of Letters Patent.

Patented Apr. 25, 1911..

Application filed August 13, 1906. Serial Ho. 330,466.

To all whom it/may concern:

Be it known that l, Jnssn G. "VINCENT a citizen of the United States, residing at Detroit, in the count-yof Wayne and State of Michigan, have invented certain new and useful Improvements in Power-Drives for Adding-Machines, of which the following is a specification.

The present invention relates to the application of power for driving adding machines and the like which have generally been operated by hand.

The object in general is to improve the controlling devices whereby the power drive is brought into play at the will of the person running the machine, in'such manner that the possibility of misoperation is reduced to the minimum. I

One specific-object is to prevent the establishznent of the above mentioned relation so long as the machine is equipped for hand operation as by the application of a handle to the working parts thereof; and vice versa to prevent the application of hand operating means such as a detachable handle at a time when a detent or the like is displaced for effecting connection between the motor and the machine.

Another specific object of the invention is to provide forthe automatic return to normal of detcnt devices displaced when es: tablishing the above recited relation between the power drive and the working parts of the adding machine, while at the same time permitting the operator to hold displaced the key or other manipulative device which he touches to cause an operation of the machine to take place.

The invention also aims to improve the character of the detent devices to provide against wear.

\Vith these and incidental objects in view the invention consists in certain novel features of construction and combinations of parts the essential elements whereof are revcited in the appended claims and a preferred form of embodiment of which is illustrated in detail in the accompanying drawings and fully described hereinafter.

()i. said drawings Figure l represents in side elevation. except for casing and crossrods and shafts appearing in section. an addingmachine of the well-known Burroughs type having applied thereto the improvements of the'prcseut invention; Fig.

2 represents in elevation the on-and-oft switch of an electric motor with the turn button in section and a portion of a slotted link embracing the same; Fig. 8 represents a vertical cross-section taken substantially on the line 3-3 of Fig. 1, showing on an enlarged scale the clutch connections between .the motor and the adding machine;

Fig. t represents on an enlarged scale in side elevation those parts having more particularly to do with the present invention and already shown on a smaller scale in Fig. 1, these parts being shown in both instances in normal position; Fig. 5 is a somewhat similar view with the parts out of normal and dotted line illustrations of different positions assumed by them; and Fig. 6 represents a vertical cross-section taken substantially on the line 6-6 of Fig. 1 looking toward the'front of the machine as indicated by the arrows crossing said section line.

The type of adding machine to which the present-lmprovements are shown applied in the present instance is that exemplified in the \Villiam S. Burroughs Patents Nos. 130L963 and 505,078 issued September 12,

1893 and is so well kn0wn both through these and other patents and through the presence of the machine in large numbers on the market that no detailed description need be given although some of the working parts of a machine of this type will be referred to where the same come into play in connection with the present improvements.

The reference numeral 300 designates the usual stub shaft of such an adding machine to which shaft it iscustomary to apply a detachable operating handle such as indirated by dotted lines 368 in Fig. (3, the hub of the handle and the outer, end of the shaft being shouldered to provide for relative engagement between them. The power drive illustrated in the present case is in the form oi an electric motor suspended from the bottom of the adding machine whose base castin is designated by the numeral 1065.

.ihc numeral 3765 designates the casing of the motor with which is'compoundcd a gear casing whose cap or cover plate is' designatcd 3665 in Fig. 1. The armature shaft poriion the clutch disk 3601 peripherally reclassed tor the reception ol clutch blocks or struts 5631 (Fig. The latter are loosely mounted n 1011 inwardl sro'ectin wins C of a. plate 3610 loose upon the flanged per-- lion of the shaft. The disk iltlillis embraced by a hardened ring 3690'" riveted to the web of the worm wheel 3667 and springs lllio'l. interposed behind the clutch blocks Z5631. tend to thrust them toward the shallow ends of the recesses in the dislcto traction-- ally connect. the clutch members in a wellknown manner so that the worm wheel may drive the shaft. The latter carries 3 :am 3668 which runs against a roller at the lower end of. a pitnian 13691 V i- 34391 1/2, the latter being jointed to a crank arm L90 on a shaft 100 of the adding machine, which shaft carries one or more crank arms 11G connected. by strong springs 1.80 with the base casting 1065 of the coding machine and connected by a link plate- 3610 carries on its outer side a rigidly afiixed stop strip 8M7 with a' double concave end tame and the rock shafts are formed with flanged heads on their inner ends with semi-circular projecting portions 3650 and 3651 designed to on oe respei'itively with the concave portions aid s'top piece 3617 for the purpose of preventing" rotation of the plate 8610 and consequently frictional driving, engagement between the clutch. members. This is the normal condition and it is necei ry to dis place both of the detents 36530 and 3651 before the power drive. can he brought into action. The/two rock shaitts 3650 and 3651 are. geared together so as to act in unison by means oi two segments, one formed in the edge of a. dish 36H secured to the end ol the r ck s 35-50 and the other 't'ormed in .he dish-like central portion oi a lever 3H5 secured to the end ol' the IO'Uli' shaft 3651. The depending: arm 3615 of this bell crank lever is jointed to lie forward end of a link 361;) S/ lwhose rea end is formed with a double keyhole slot comprising a central. portion iltilfi ii/l" an elongated front, portion 361.3 3/1 and a shorter rear portion 3615 3/4. This slotted end of the linlc embraces the shank 3701 ol the turn hutton of the on-andoii switch li l oi" the electric motor and said shank is oblong in cros. section asshown in Fig. 2 so that when lying lengthwise oi the keyhole slot the link may .move longitudinally but when lying crosswise ol" said slot in the central portion thereof as shown in said 2 no longitudinal movemem ot the linl; can take place. In this manner displacement of the detenlls to permit the closing of the clutch is prevented so long as the switch turned oil' and permitted only when the motor is in operation. llence no niisoperation of the machine can take place on account of a release of the clutch when no power present to drive it. Correspondingly the switch haying been turned on it. is prevented from being turned oll' while the detents remain misplaced. This feature has been made the subject of a divisional appli cation, Serial No. 602,423. filed Jmniary .l l, 1911.

The forwardly extending; arm of the hell crank 3615 is coupled to the lower end oi a vertically extending bar 362'? whose upper end is longitudii'nilly slotted to receive ihe screw stud .5653 1/4" on the rear end of a lever 36.l-2, the latter 'oein pivoted inter mediate-its ends on a stud 208 LIZ- oeioi the key-hoard oi? the adding machine. A starting bar 3698 extends at a convenient-location along the right-hand side of the rows of keys of the adding machine and is mount ed upon legs 3622 and 36% suitably guided for vertical movement through the top of the 'n'iachine, the forward leg being engaged with the front end of said lever 3612 and the rearward leg being sin'iilarly engaged with the rear end of alever 3613- pivoted inter mediate its ends on a stub shaft 200 1/2 and engagedat \ils forward end with a stud 3655 1/4 on the lever The two levers are connected above their pivots by a coin lractile spring 3688 which thus exe" s ilself to elevate the starting bar 3698 and d press the stud 3653 'l/ l The latter normally oncupies the lower end of the slot of the bar 3627, the lever 3(Sl2 being connected with said bar by a contractile ring 31582. lhroue'h the engagement of. said said with the lower end of said slot, the

place the clutch instantly closes and the motor drives the adding machine.

it. will be understood that the power of the motor is only applied to put the machine ill) through one-half of a cycle of operation and that the springs 180 complete the operation. It is important that all of the working parts of the adding machine shall have rethe sector plate 311% Normally these partsare separated -from each other as shown in Figs. 1 and i: but when the starting bar is depressed as above explained the upward movement of the detent bar 3627 brings the horizontal edge or flange of the arm 36271/2 up to said tappet roller as shown by the full lines in Fig. 5. Therefore, immediately upon the application of power to drive the adding machine said detent baris again depressed by the. rocking of the sector plate 311 and the detents are restored to effective position, the timing being such that this takes place as soon as the stop piece 3617 passes the rear ends of the detents. "-Vhile .it is thus highly desirable that the detents shall be restored to eii'ective position by the initial movement of the working parts of the adding machine in order that there can he no second application of power until those parts have returned to normal, yetit is likewise desirable that the operator may hold the starting bar down and not be required to repeatedly touch the same in order to produce successive operations of the adding machine. It will be readily seen that this continued depression of the starting bar will permit a succession of operations to the utmost limit of the speed capacity of the 'adding machine whereas if the operator'is required to repeatedly touch the bar it is practically impossible to get. the greatest speed out of the adding machine. It will be seen that with the construction above described the starting bar can be held down during any number of successive operations for when the detent bar 362? is depressed by the working parts ofthe machine it does not necessarily lift the starting bar back to normal position but if the latter is held down the spring 3682 simply stretches. Then as the parts of the adding machine go back to normal this spring draws the starting bar upto the stud 3653 1/4 whieh'stud remains elevated as long as the starting bar is depressed and. consequently permits suflicientupward movement of the detent liar to displace the detcnts.

instant: the adding machine parts arrive at normal they are started on another cycle of pperation by the motor. Of course when thestarting bar It follows that the is released then the stud 3653 .l/eL takes up a lower position and the detent bar cannot move far enough to again displace the dctents.

In order to prevent any connection being effected between the motor and the working parts of'the adding machine while the latter is equipped for hand operation, the detent bar 3627 is formed with a laterally and upwardly projecting lug 362'?" which engages the hub of the hand lever 368*. Thus so long as such handle is in place the detent bar is prevented from displacing the detents. Correspondingly when the detents are displaced the hand lever cannot be connected with the working parts of the adding machine as the lug 3627 then projects into the space which the hub of said hand lever must occupy in order to connect with the shaft 300. Thus by reference to Fig. 6 it will be seen that with the handle fully applied as there represented in dotted lines, a portion of its huhor sleeve will extend directly. above the projection 3627, and.vice versa if the bar 3627 stands in a raised position, permitted by the absence of the handle, then said projection 3627 will he encountered by the end of the hub or sleeve if it is'attempted to apply the handle, and hence the latter cannot be rotatively engaged with the shaft 3.00, it being noted that the projection is in the vertical planeo'f the projecting part of the shaft which said portion of the'handle hub has to overlap in order that rotative engagement may be had.

-- Where a total key is employed it is desirable to guard against premature starting of the motor when taking a total and in the present instance means are provided for blocking the starting bar during depression of the total key.

The numeral 227 designates the shank of the usual Burroughs total key which is part of a bell crank lever whose depending arm is connected by a link 1416 with a crank arm 1410 on a shaft 1400 and the latter has at fixed to it an arm 1415 with a segmental outer end portion. The lever 3612 is equipped with a square stud 3655 1/2 at its forward part and normally the segn'lcntal outer end of the arm N15 is ust forward oi" this stud.- Vhcn the total key is depressed said arm is swung rearwardly through the connections described and its segmental part immediately passes below said pin thereby blocking depression of the starting bar in an obvious manner. Not until the total key is fully depressed does the segmental outer end of the arm 1415 pass rearward of said pin as illustrated in Fig. 5 and so the motor cannot be connected with the working parts of the adding machine when a total is to be taken until the total key has been fully deprcsscd. When the starting bar is depressed without first depressing the total key the latter is prevented from being depressed by \;'ieldingly connected with the dctent, and hwans operated by the clutch for restoring htoriug the detent to normal position P02154011 of the Find 3635 1/? taking;- up a por ition behind the Segmental end of the arm 1 lllfi. The total key is: held down during the requisite portion of movement of the said working parts hy reason ot the migrant Illtllt ol a curved tlangt' 113 on the Sector plate 311" in l ront ol a roller l SIS on an arm 'l-ll-l iepentling lil'Ollt the shaft 14.00. E in an iteinizii' o 'ieraiion the said llange l pasws l)(llllltl saul roller and pre've'i'its dc ]1lt"-' 'lt 2 ol' thetotal hey hut his particular Feature lot-um no part o t' the present inven ll 1. ll \villhe seen that the ahoi'o dcs-t'rihed tt)tl. ll'Htll(lllS are well (alt'ulatetl to thorought t'ullil all of the object primarily stated. The doublidetrnt construction has the ad vantage of preventing such in'q'iairing of correct per'li'vrnlance of the clutch parts a might take place through Wear where a Hill- ;le detent was: employed. The sal'cty do vices de-wrihed et'w-tuaily prevent errone l ona manipulation of the liiztt'llltlt without plariirg any restrictions upon it peed of op oration. it is to he understood, however, that the ahore de crihed eorstructions are auai-e 'itihlc o l modification Within the scope ol the invention.

llhat; is claimed is:

.l. The combination with the prime mover the latter, and. a manipulative displacing device yieldingly ronnet-ted with th* :letenl',

and means operated hy the power trive lor restoring the detent to normal poait'iou.

2. The COii'illlllzttlUll with the prime mover ol. the machine propel; of a power (lrive applied thereto with an lllltflVt i 1;: clutch and tltllt'll elosen a detent uorn I restraining the latter, a manipulative oiaplaring device the detent to normal pOtllilOIl.

23. The combination with the prime mover ol the machine pro jier, of a power drive an plied thereto with an intervening clutch and -lut zh (lower, a ilet nt .iiorinallji' restraining; tho latter, a manipulative displacn devil 3 yieltiingly ronnected with the dot t, and in ans operated liy said prime mover for rw l. Tlfhe coinhinatiion with the prime mover ol the niaelnno propi'j-r and a tappct piece operated til'ioreliy; ot a power drive applied l to said prnnc niovcr with an inter-renting clutch and clutch closer, a deteut normally restraining the latter, and a llltlllipltiklllYt starting); tlOVlt't, ji'ielding'ly connected w th said detcnt to displace tho same and present ll to the action of the tappet, piece.

vices 5. The romhination with the prime lil !\'\.l' ot' the nnielnne proper and a tappel. piece operated thereby; 01 a powen driri- -in lltwl to said prime mow-r with an intervening t'llllt'll and clutch closet: and kltltlll dtwit-(s :t'or normally restraining the latter i-oiupr ing a detent proper a reciprocating har coupled thercto and having a shoulder for pre-' entation to said tappet piece, and. a inauipulativc device yiehlingly connected With said bar.

(3. The combination with the priinc mover of the machii'ic proper and a tanpct. piece operated thereby; oi a power drive applied to said prime mover with an intervening lutch r r; and detent der tor nornia restraining the latter conr ing a rocking detei'it proper, a I't procatiing har coug iicd thereto and having a shoulder ing a detent' proper. a lottcd rt, iproeating har eouplcd thereto and having a should r l or presentation to Said tappet. piece a lov; lowing a. pin engaging the slot of said bar, and a spring manner-ting the lever and the bar.

S. member; ot a power drive applied thereto with an intervening clutch and clutch (aloe a dot-cut normally '1' ainingr the latter, a manipulative displacu device, yieldingly connected with the dt-ieatrand means operated h aid oscillatory meinbor 'lor restoring the deli-tit to normal position.

th ihe combination with an oscillatory member 0 rying a tappet picce; of a power drive applied to said member With an inter- 'enino' clutch and clutch closer, a (lo-tent normally restraining the latter and a 1nanipulative starting device yieldingly coir DOClQtl with said dctcnt to displace the aan'ie and present it to the act-ion ot the tappet piece.

it). The combination with an oscillatory ineuiher carrying a tappet; oieco; of a power drive plied t maid parts with an interv0ninn rlutrh and rlutch closer, and delcnt dc ltr normally restraining; the latter roinra'i;- iin; a detent pro 'ior, a reciprocating har coupled thrreto and having a shoulder l'or i l't'fittliililtlll to said ttappet piece, and a manipulative device yioldingly connected with said har.

ll. The combination with the prime mover of, the machine proper; of a plt'trality of operating means :l'or application thereto with provisions for disabling the one by applicafl lion ol the other.

ii. The oombination with the prime mover ot' the machine proper; of hand operating The coinhiimtion with an oscillatory means applicable thereto, a power drive also applied thereto, and means for obstructing a pplication of the one form of operating means by the application of the other.

' 13. The combination with the prime mover of the machine proper and a detachable handle for operating the same; of a power drive applied to said prime mover with an intervenirtg clutch, and means for closing the latter with provisions for preventing such closing while the handle 1s operatively connected with the prime ihover of the machine.

'" effect.

14. The combination with'the prime mover of the machine proper and a detachable handle for operating the same; of a power drive applied to said prime mover with an intervening clutch, and means for closing the latter with provisions for preventing application of'the handle when said means take 15. The combinationwith the prime mover of the machine proper and a detachable handle for operating the same; of a power drive applied to said prime mover with an inter vening clutch and clutch closer, a detent tor restraining the latter, and means fordisplacing the detent' with provisions for preventing such displacement while the handle is operatively connected with the prime mover. p

'16. The combination with the prime mover of the machine proper and a detachable handevices for restraining the latter including a reciprocating-membcr adapted to be obstrncted by the handle.

18. The combination with the primemover of the machine proper and a detachable handle for operating the same; of a power drive applied to said prime mover with an intervening clutch and clutch closer, and detent devices for restraining the latter including a reciprocating member adapted to obstruct the handle.

19. The combination with the prime move of the machine proper and a detachable handle for operating the same; of a power drive applied to said prime mover with an inter-. vening clutch and clutch closer; and detent devices for restraining the latter including a r ciprocating member adapted to be obstructed by the handle and a manipulative device yieldingly connected with the bar.

with an intervening clutchand clutch closer; I

and detent devices for restraining the lat ten-including a reciprocating member hav to be obstructed by ing'a projection adapted the handle.

The combination movenof the machine proper and a detachable handle ior operating the same; of a. power drive applied to said prime mover with an intervening clutch and clutch closer and detent devices for restraining the latter including a reciprocating member having a projection adapted to obstruct the handle.

2*). The combination with the prime mover ofthe machine proper and a detach: able handle for operating the sameg ot a power drive applied to said prime mover with an intervening clutch and clutch closer; and d-t-tcnt devices for restraining the latwith the prime tor including a reciprocating member having a projection adapted to be obstructed by the handle and a manipulative device yicldin rly connected with the bar.

24. The combination with the prime mover ot' the machine proper and-a detachable handle for operating the same; of a power drive applied to said prime mover with an intervening clutch and clutch closer; and dctent devices for restraining the latter including a reciprocating member having a projection adapted to obstruct the handle and a manipulative device yieldingly connected withsaidmember:

25. The combination with the main shaft of the machine proper and a detachable handle rqtatively engageable therewith; oi a power drive applied to said shaft with an intervening clutch and clutch closer; anda detent normally restraining the latter and having a part which when the detent is displaced enters space that a part "of the bandle appropriates when it is applied to the shaft. 1

2G. The combination with the main shaftof the machine proper and a detachable handle adapted to thrust endwise into rotative engagement with said shaft; of a power drive applied to said shaft with an intervening clutch and clutch closer; and a dctent normally restraining the latter and having a part which when the detent is (he'- placed enters spacethat the handle hub appi'nprintes when tlll'ltst L'lltlWlHi into i'nt'w tive engagen'ient Wltll the shaft.

21. The (rmnbinzlt'ion with the inain shaft of the machine proper and a detachable hun- (lle having a sleeve 01' huh portion utlaptetl tn be tln-nst entlwi'se into i-otutive engage ment with the shaft; of a power drive applied. to said shaft with an clutch and Cltltf'll closer; and :1 (lQtGllt' DOP nuilly restraining the latter and having; a

pi'ejectien Whieh the handle hub 01' sleeve eentionts and OlJStlt'lCt'S when the handle is rotatitely engaged with the shaft and which intervening l t I l I I t I Witnesses;

ll. ll. imcms, E. I. Wnxmnz. 

